#include "sysdep/ptrace.h"
#include "sysdep/faultinfo.h"
-typedef void (*kern_hndl)(int, struct uml_pt_regs *);
-
-struct kern_handlers {
- kern_hndl relay_signal;
- kern_hndl winch;
- kern_hndl bus_handler;
- kern_hndl page_fault;
- kern_hndl sigio_handler;
- kern_hndl timer_handler;
-};
-
-extern const struct kern_handlers handlinfo_kern;
-
extern int ncpus;
-extern char *gdb_init;
extern int kmalloc_ok;
-extern int jail;
extern int nsyscalls;
-#define UML_ROUND_DOWN(addr) ((void *)(((unsigned long) addr) & PAGE_MASK))
#define UML_ROUND_UP(addr) \
- UML_ROUND_DOWN(((unsigned long) addr) + PAGE_SIZE - 1)
+ ((((unsigned long) addr) + PAGE_SIZE - 1) & PAGE_MASK)
-extern int kernel_fork(unsigned long flags, int (*fn)(void *), void * arg);
-extern int kernel_thread_proc(void *data);
-extern void syscall_segv(int sig);
-extern int current_pid(void);
extern unsigned long alloc_stack(int order, int atomic);
+extern void free_stack(unsigned long stack, int order);
+
extern int do_signal(void);
-extern int is_stack_fault(unsigned long sp);
+extern void copy_sc(struct uml_pt_regs *regs, void *from);
+extern void interrupt_end(void);
+extern void relay_signal(int sig, struct uml_pt_regs *regs);
+
extern unsigned long segv(struct faultinfo fi, unsigned long ip,
int is_user, struct uml_pt_regs *regs);
extern int handle_page_fault(unsigned long address, unsigned long ip,
int is_write, int is_user, int *code_out);
-extern void syscall_ready(void);
-extern void set_tracing(void *t, int tracing);
-extern int is_tracing(void *task);
-extern int segv_syscall(void);
-extern void kern_finish_exec(void *task, int new_pid, unsigned long stack);
-extern unsigned long page_mask(void);
-extern int need_finish_fork(void);
-extern void free_stack(unsigned long stack, int order);
-extern void add_input_request(int op, void (*proc)(int), void *arg);
-extern char *current_cmd(void);
-extern void timer_handler(int sig, struct uml_pt_regs *regs);
-extern int set_signals(int enable);
-extern int pid_to_processor_id(int pid);
-extern void deliver_signals(void *t);
-extern int next_trap_index(int max);
-extern void default_idle(void);
-extern void finish_fork(void);
-extern void paging_init(void);
-extern void init_flush_vm(void);
-extern void *syscall_sp(void *t);
-extern void syscall_trace(struct uml_pt_regs *regs, int entryexit);
+
extern unsigned int do_IRQ(int irq, struct uml_pt_regs *regs);
-extern void interrupt_end(void);
-extern void initial_thread_cb(void (*proc)(void *), void *arg);
-extern int debugger_signal(int status, int pid);
-extern void debugger_parent_signal(int status, int pid);
-extern void child_signal(int pid, int status);
-extern int init_ptrace_proxy(int idle_pid, int startup, int stop);
-extern int init_parent_proxy(int pid);
-extern int singlestepping(void *t);
-extern void check_stack_overflow(void *ptr);
-extern void relay_signal(int sig, struct uml_pt_regs *regs);
-extern int user_context(unsigned long sp);
-extern void timer_irq(struct uml_pt_regs *regs);
-extern void do_uml_exitcalls(void);
-extern int attach_debugger(int idle_pid, int pid, int stop);
-extern int config_gdb(char *str);
-extern int remove_gdb(void);
-extern char *uml_strdup(const char *string);
-extern void unprotect_kernel_mem(void);
-extern void protect_kernel_mem(void);
-extern void uml_cleanup(void);
-extern void lock_signalled_task(void *t);
-extern void IPI_handler(int cpu);
-extern int jail_setup(char *line, int *add);
-extern void *get_init_task(void);
-extern int clear_user_proc(void *buf, int size);
-extern int copy_to_user_proc(void *to, void *from, int size);
-extern int copy_from_user_proc(void *to, void *from, int size);
-extern int strlen_user_proc(char *str);
-extern long execute_syscall(void *r);
extern int smp_sigio_handler(void);
-extern void *get_current(void);
-extern struct task_struct *get_task(int pid, int require);
-extern void machine_halt(void);
+extern void initial_thread_cb(void (*proc)(void *), void *arg);
extern int is_syscall(unsigned long addr);
+extern void timer_handler(int sig, struct uml_pt_regs *regs);
-extern void free_irq(unsigned int, void *);
-extern int cpu(void);
+extern void timer_handler(int sig, struct uml_pt_regs *regs);
+
+extern int start_uml(void);
+extern void paging_init(void);
-extern void time_init_kern(void);
+extern void uml_cleanup(void);
+extern void do_uml_exitcalls(void);
-/* Are we disallowed to sleep? Used to choose between GFP_KERNEL and GFP_ATOMIC. */
+/*
+ * Are we disallowed to sleep? Used to choose between GFP_KERNEL and
+ * GFP_ATOMIC.
+ */
extern int __cant_sleep(void);
-extern void sigio_handler(int sig, struct uml_pt_regs *regs);
-extern void copy_sc(struct uml_pt_regs *regs, void *from);
+extern void *get_current(void);
+extern int copy_from_user_proc(void *to, void *from, int size);
+extern int cpu(void);
+extern char *uml_strdup(const char *string);
+
extern unsigned long to_irq_stack(unsigned long *mask_out);
-unsigned long from_irq_stack(int nested);
-extern int start_uml(void);
+extern unsigned long from_irq_stack(int nested);
+
+extern void syscall_trace(struct uml_pt_regs *regs, int entryexit);
+extern int singlestepping(void *t);
+
+extern void segv_handler(int sig, struct uml_pt_regs *regs);
+extern void bus_handler(int sig, struct uml_pt_regs *regs);
+extern void winch(int sig, struct uml_pt_regs *regs);
+
+
#endif
-/*
- * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
+/*
+ * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
* Licensed under the GPL
*/
#include <stdlib.h>
+#include <unistd.h>
#include <errno.h>
+#include <fcntl.h>
+#include "kern_constants.h"
+#include "kern_util.h"
#include "os.h"
#include "user.h"
-#include "kern_util.h"
struct grantpt_info {
int fd;
int get_pty(void)
{
struct grantpt_info info;
- int fd;
-
- fd = os_open_file("/dev/ptmx", of_rdwr(OPENFLAGS()), 0);
- if(fd < 0){
- printk("get_pty : Couldn't open /dev/ptmx - err = %d\n", -fd);
- return(fd);
+ int fd, err;
+
+ fd = open("/dev/ptmx", O_RDWR);
+ if (fd < 0) {
+ err = -errno;
+ printk(UM_KERN_ERR "get_pty : Couldn't open /dev/ptmx - "
+ "err = %d\n", errno);
+ return err;
}
info.fd = fd;
initial_thread_cb(grantpt_cb, &info);
- if(info.res < 0){
- printk("get_pty : Couldn't grant pty - errno = %d\n",
- -info.err);
- return(-1);
+ if (info.res < 0) {
+ err = -info.err;
+ printk(UM_KERN_ERR "get_pty : Couldn't grant pty - "
+ "errno = %d\n", -info.err);
+ goto out;
}
- if(unlockpt(fd) < 0){
- printk("get_pty : Couldn't unlock pty - errno = %d\n", errno);
- return(-1);
+
+ if (unlockpt(fd) < 0) {
+ err = -errno;
+ printk(UM_KERN_ERR "get_pty : Couldn't unlock pty - "
+ "errno = %d\n", errno);
+ goto out;
}
- return(fd);
+ return fd;
+out:
+ close(fd);
+ return err;
}
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
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